Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>> Unfortunately, hlist is not available with kernel 2.4. Please provide
>> wrappers as well.
>
> Hi Jan,
>
> here is a hlist.h header with only what is needed. I did not know where
> you want to put it, so here it comes, as an attachment.
>
> I could not test it, since I have no working 2.4 sources at hand.
Forgot hlist_entry. Here is a fixed version.
--
Gilles.
#ifndef HLIST_H
#define HLIST_H
#include <linux/stddef.h>
#include <linux/prefetch.h>
#include <asm/system.h>
#define LIST_POISON1 ((void *) 0x00100100)
#define LIST_POISON2 ((void *) 0x00200200)
struct hlist_head {
struct hlist_node *first;
};
struct hlist_node {
struct hlist_node *next, **pprev;
};
#define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL)
static inline void __hlist_del(struct hlist_node *n)
{
struct hlist_node *next = n->next;
struct hlist_node **pprev = n->pprev;
*pprev = next;
if (next)
next->pprev = pprev;
}
static inline void hlist_del(struct hlist_node *n)
{
__hlist_del(n);
n->next = LIST_POISON1;
n->pprev = LIST_POISON2;
}
static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
{
struct hlist_node *first = h->first;
n->next = first;
if (first)
first->pprev = &n->next;
h->first = n;
n->pprev = &h->first;
}
#define hlist_entry(ptr, type, member) \
((type *)((char *)(ptr) - (unsigned long)(&((type *)0)->member)))
/**
* hlist_for_each_entry - iterate over list of given type
* @tpos: the type * to use as a loop cursor.
* @pos: the &struct hlist_node to use as a loop cursor.
* @head: the head for your list.
* @member: the name of the hlist_node within the struct.
*/
#define hlist_for_each_entry(tpos, pos, head, member) \
for (pos = (head)->first; \
pos && ({ prefetch(pos->next); 1;}) && \
({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
pos = pos->next)
#endif /* HLIST_H */
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